ECONOMIC GEOLOGY, 201 



Another remarkable specimen of carved granite is a very large and 



handsome stambha or lamp post, of grey colour, 



Great stambha at t b t Korlagundi, a village 10 miles 



Korlagundi. fe ' ° 



north-north-east of Bellary. This was said to 

 have been quarried at the Kapgal hill, 7 miles to the south. 



Of the non-granitic rocks suitable for building stones, the trappean 

 rocks are the most largely represented in nature, 



Trap porphyries. . , . 



but none of them, so far as my observation went, 



have been used in that way, though many of the lighter greenish 



diorites are stones of great beauty. Where prophyritic in structure, 



as they occasionally are, they are yet more strikingly beautiful. 



A lovely example of such a trap porphyry occurs at Hurlihal 



(Hoorlyhall) in the south-east corner of Kudlisfi 

 At Hurlihal. J . , , , _ , 



taluq : rich green crystals of felspar snow out or 



a blackish green matrix in large numbers. The dyke cuts the famine 



road (which runs from Hurlihal eastward to join the Bangalore-Bellary 



high road), about half a mile east of the village, and here several large 



blocks of the trap had been recently blasted and showed the extreme 



beauty of the rock to perfection. The dyke is over two miles long 



and of good size, so the quantity of stone it could furnish is very large. I 



commend this beautiful green porphyry and the red granite of Dammur 



and Bailur hill to the earnest attention of the Madras School of Arts. 



Another very lovely trap porphyry of somewhat similar character 



occurs at Kallakurti (Cullacoortee) in a small 

 At Kallakurti. 



dyke close to the right bank of the Haggari river 



about 1 5 mile south-south-west of Malyam (Maulyan) in Raidrug 



taluq. The loose blocks forming the surface of the dyke have been 



carted away by the villagers, but the dyke itself remains, though much 



obscured by cotton soil. 



A few handsome pillars of polished porphyritic diorite are to be 



seen in one or two of the old ruined temples at Vijayanagar. 



The very numerous and often large dioritic dykes, so characteristic 



of the granitic regions of all parts of the Ceded 



Trap rocks as material Districts, Bellary district included, which can be 

 for road-metal. J ' 



made to yield road-metal of the very finest 



( 201 ) 



